package com.test;

/**
 * @Auther: ChenJinEn
 * @Date: 2020/7/22 20:13
 * @Description: //TODO
 */
public class Super {
    public Integer getLength(){return new Integer(4);}
}
class Sub extends Super{
    public Long getLength(int a){return new Long(5);}

    public static void main(String[] args) {
        Super sooper = new Super();
        Sub sub = new Sub();
        System.out.println(
                sooper.getLength().toString()+"."+
                        sub.getLength().toString()
        );
    }
}
